If your business sends emails of any kind (and I can’t imagine why it wouldn’t) then you need to be aware of these basics. Otherwise your emails will just end up in the spam/promotions folder and nobody will ever see them.
These are all pretty much ‘set and forget’ things that need to be done at your domain level (in the DNS settings).
NOTE: this is NOT a technical guide on how to set them up. This is an introduction to what they are and why you need them. You can absolutely break your email and even your website by getting these settings wrong.
That said, let’s get into what SPF, DKIM and DMARC are for.